| abstract |
The present invention is for the use of branched addition copolymers as dispersants in gas, liquid or solid compositions in a range of applications, as well as branched addition copolymers suitable therefor, obtainable by addition polymerization processes. With respect to the copolymer, where the copolymer comprises at least two chains that are covalently linked by cross-links other than at their ends; wherein the at least two chains comprise at least one ethylenically monounsaturated monomer, wherein Wherein the cross-linking comprises at least one ethylenically polyunsaturated monomer; wherein the polymer comprises a residue of a chain transfer agent and wherein the polyunsaturated relative to mono-unsaturated monomer (s) The molar ratio of monomer (s) ranges from 1: 100 to 1: 4; and where the branched copolymer is Mer dispersing agent comprises a fixed part, the solvated moiety or stabilizing moiety, wherein the resulting copolymer contains at least 10 wt% of styrene monomer, a blancher or chain transfer agent. |